/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.netbeans.modules.languages.hcl.ast;

import java.util.List;
import java.util.Objects;
import java.util.stream.Stream;

/**
 *
 * @author lkishalmi
 */
public sealed interface HCLArithmeticOperation extends HCLExpression {

    Operator op();

    public enum Operator {
        NOT("!"),
        MINUS("-"),

        MUL("*"),
        DIV("/"),
        MOD("%"),

        ADD("+"),
        SUB("-"),

        OR("||"),
        AND("&&"),

        LTE("<="),
        GTE(">="),
        LT("<"),
        GT(">"),
        EQUALS("=="),
        NOT_EQUALS("!=");

        final String op;

        private Operator(String op) {
          this.op = op;
        }

        @Override
        public String toString() {
            return op;
        }
    }

    public record Binary(Operator op, HCLExpression left, HCLExpression right) implements HCLArithmeticOperation {
        @Override
        public String asString() {
            return HCLExpression.asString(left) + op.toString() + HCLExpression.asString(right);
        }

        @Override
        public List<? extends HCLExpression> elements() {
            return Stream.of(left, right)
                    .filter(Objects::nonNull)
                    .toList();
        }
    } 

    public record Unary(Operator op, HCLExpression operand) implements HCLArithmeticOperation {
        @Override
        public String asString() {
            return op.toString() + HCLExpression.asString(operand);
        }

        @Override
        public List<? extends HCLExpression> elements() {
            return operand != null ? List.of(operand) : List.of();
        }
    } 
}
